Welding torch



`AC. h COBERLY. n WELDING TORCH. APPLICATION.` FILED JUNE H. 1920.

Patented Nov. 21, 1922.

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PatentedfNov. 2l, v

'STAB-Sii' CLARENCE J. COBERLY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TOCALIFORNIA BUB'DETT OXYGEN COMIANYJ A. CORTORA'IlON OF CALIFORNIA.

WELDING 'ronca'.

Application filed June 8, 1920. Serial No. 387,487.

To all 'whom t may concern: 'l v Be it'known that I, CLARENCE J'. CoBnRnY, a citizen of the United States,.residingat Los Angeles, in theAcounty of Los Angeles and State of California, have invented a new anduseful Welding Torch, ofwhich the following is a specification.

My invention relates to torches used 'for welding and is particularlyapplicable to a torch using oxygen and acetylene as, a fuel. Y

An object of my invention is tofprovide a torch inwhich the size of tipcan be readily changed` without necessity of any adjustment or change lof the torch. v

The invention resides in the peculiar combination and arrangement ofparts described in the following .specification and illustrated on theannexed drawing.

Referring to this drawing which is for illustrative purposes only,

Fig. l is a side elevation of a torch embodying my invention.

Fig. 2 ,'s an elevation on an enlarged scale, a portion ofthe torchbeing broken away and shown in section to better illustrate the internalstructure. y J

Fig. 3 is a section on a plane represente by the line 3-3 of Fig. 2, andv Fig. 4 is a section on a plane represented by the line 4-4 of Fig. 2.i Fig. 5 is a diagram of connections.- In the form of. the inventionshown, a

body 11- is provided, this body having a' connection l2 for an oxygensupply pipe 9,

and'a connection 13 for an acetylene pipe 8, valves 14 and 15 beingprovided to control the flow of these gases. The connection 12 connectswith a bent oxygen pipe v16 and the connection V13 connects with anacetylene pipe 17. The pipes 16 and'17 are secured i'n al head 20?, thepipe 16 leading directly into a conical cavityl 2l formed in the head,and the pipe 17 leading into an annular chamber 22 inthe walls of thiscavity. The head 20 has an-internal thread shown at l24, this threadbeingengaged by a nut 25 which isfree to turn ona goose neck 26. Thegoose neck is bent as shown 'and is threaded at 27 for the reception ofa removable tip 28 which has a central passage Vwith a constriction 29therein. Formed lin the gooseneck is a. cylindrical bore in Awhich abushing 30 is driven, this bushing in-the mixer or other parts having atapered passage 31 therein. The end ofl thebushing 30 is adjacent to butseparatedfrom the end of a mixing tube 35 which is provided with anenlarged head tapered to fit inthe conical cavity 21. The nut 25 is heldin place by a clamping ring 40, threaded on the'gooseneck 26. Themixingv tube `35"has'a central passage there` through whichconnects thehole 3l in the bushing 30 with the oxygen pipe 16. The

mixing-tube 35 is also, provided with a plurality ofsmall passages 43Aconnecting the groove 22 with the central passage in the mixingtube. n 7Y,

One of the principal objectsofthe invention is to provide a torch whichcan be readily manufactured and assembled. It will be noted .that thenut 25 is free to turn on the gooseneck 26 but is restrained from movingaxially thereon by means of the clamping rin 40. By releasing the nut25,-.the goosenec with the mixing tube 3p and the bushing 30, may betaken entirely out of the head 20 for repairs or for the purpose ofsubstituting a diiferent size of mixer..

Inpractice the pipe 9 connects through a regulator 40 with a tank 41 andthe pipe 8 connects through a regulator42' with a tank 43. Theregulators 40 and 42 arel each provided with an adjusting screw 44 by?ywhich. the pressure delivered tothe pipes- 'v 8 and 9`may be regulated,this pressure being indicated on gauges I45. The parts 40 to 45inclusive are standard in the art vand `need not be more specificallydescribed. p

The method hf operation is as follows:

The oxygen passes through the pipe- 16 into the central opening in themixing tube 22 and into the enlargedpassage formed by the tapered hole31 and by the continuation of that passage formed in the gooseneck 26,

and thus through the tip 28. The acetylene passes through the pipe 18and linto the groove 22, passing through the small passages 43 into thecentral passage in the mixing tube where `it-is'dire'ctly mixed withtheoxygen, the mixture passing through the gooseneck' 26 through theconstriction 29 and emerging from the tip Awhere the mixture is burned.

Theconstriction 29 shown in section 3-3 of the tip is for the. purposeof controlling as. The reason for this con,-

striction 'in t e tip is that it is desirable to ing the other featuresof the torch, and it is also desirable to use pressures of gascorresponding to the size 'of the tip being used.

If the gas pressure were varied with several sizes of tips and one mixer3.5, names of a different character would result because ofY mixer butby having the constriction 29 in .different sized tips made so that witha single mixer the flow of gas is regulated to suit each tip, it is onlyvnecessary to change the tip and to set the' pressure at the regulator ivto correspond to tip number. In practice the tip number indicates theproper pressure for each gas, this pressure being automaticallycontrolled by the regulators 40 and 42 which are manually adjusted to-the desiredr value. By this method an inexperienced man can produceexcellent re" vand a mixing tube fitting in 'an opening'in said.gooseneck and `having a shoulder fit- I claim as my invention:

1. A4. Weldingv torch comprising a head having a thread formed thereon,a pipe delivering gasto a conical cavity -in said head,

a pipe delivering gas. to a groove in the Walls of said cavity, a'gooseneck,' a nut4 on 1 said gooseneck having a' thread engaging saidthread on said' head, and a mixing tube fitting. in an opening 'in saidgooseneck and havin a shoulder ,fitting against the end fof saidgooseneck and an enlarged head .tapered to itin 'said cavity, saidmixing tube having a continuous central .passage therethrough vvhich isconnected With said groove by inclined passages.

2. A welding torch comprising ahead having la thread formed thereon, apipe delivering gas toa conical cavity in said opening" in' saidgooseneck and vhaving'a shoulder itting` againstV the end oi saidgooseneck and an enlarged head tapered to.

it in said cavity, said 'mixing tube having a continuous central passagetherethrough which is connected With said groove by .in clined passages.

, -60 A Welding torch comprising a`head having a thread formed thereon,a pipe delivering gas to a conical cavity in said ringon saidgoose'neck` preventing axial movement of said nut on said gooseneck,

ting'against the end of said gooseneck and an enlarged head tapered tofit in said cavity, saidmixing.' tube having a continuous centralpassage therethrough Whichmis con-v nected With .said groove by.inclined pas- Sages. l

Intestimony whereof, I: have hereunto hand at Los Angeles,-California,day of May, 1920.

-CLARENCE J. COBERLY.v

set my this 28th head, a pipe delivering gas to a groove in the Wallsofsaid cavity, a. gooseneck, a nut" Vfree to turn on said gooseneck, aclamping

